# -*- coding: utf-8 -*-
# @Time    : 2020/11/12 18:25
# @Author  : LiJiaMin
# @Site    : 
# @File    : custom_viewset_base.py
# @Software: PyCharm

from django_filters import rest_framework
from rest_framework import filters
from rest_framework import status
from rest_framework import viewsets

from .custom_json_response import JsonResponse


class CustomViewBase(viewsets.ModelViewSet):
    queryset = ''
    serializer_class = ''
    permission_classes = ()
    filter_fields = ()
    search_fields = ()
    filter_backends = (rest_framework.DjangoFilterBackend, filters.SearchFilter, filters.OrderingFilter,)

    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        print(request.data)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        headers = self.get_success_headers(serializer.data)
        return JsonResponse(data=serializer.data, msg="success", code=201,
                            status=status.HTTP_201_CREATED, headers=headers)

    def list(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset())
        page = self.paginate_queryset(queryset)
        if page is not None:
            serializer = self.get_serializer(page, many=True)
            return self.get_paginated_response(data=serializer.data)

        serializer = self.get_serializer(queryset, many=True)
        return JsonResponse(data=serializer.data, code=200, msg="success", status=status.HTTP_200_OK)

    def retrieve(self, request, *args, **kwargs):
        instance = self.get_object()
        serializer = self.get_serializer(instance)
        return JsonResponse(data=serializer.data, code=200, msg="success", status=status.HTTP_200_OK)

    def update(self, request, *args, **kwargs):
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)

        if getattr(instance, '_prefetched_objects_cache', None):
            # If 'prefetch_related' has been applied to a queryset, we need to
            # forcibly invalidate the prefetch cache on the instance.
            instance._prefetched_objects_cache = {}

        return JsonResponse(data=serializer.data, msg="success", code=200, status=status.HTTP_200_OK)

    def destroy(self, request, *args, **kwargs):
        instance = self.get_object()
        self.perform_destroy(instance)
        # return JsonResponse(data=[], code=204, msg="delete resource success", status=status.HTTP_204_NO_CONTENT)
        return JsonResponse(data=[], code=204, msg="delete resource success", status=status.HTTP_200_OK)
